Hydrogen is similar to halogens as it has a electron gain enthalpy.

high

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low

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moderate

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Solution

The correct option is A high
Electron gain enthalpy refers to the energy released when an electron is added to an isolated gaseous atom.

All the halogens have a high value of electron gain enthalpy . It needs only one electron in the outermost shell to attain stability. Thus, releasing a large amount of energy.

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